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Priv. Doz. Dr. Christian ErbelUniversity Hospital Heidelberg
Department of Cardiology, AngiologyHeidelberg, Germany
Venous -
Intervention
Center
Heidelberg
Dual session therapy: Catheter-directed thrombolysis to treat
acute iliofemoral DVT
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Disclosure
Speaker name: Christian Erbel
.................................................................................
I have the following potential conflicts of interest to report:
Consulting
Employment in industry
Stockholder of a healthcare company
Owner of a healthcare company
Other(s)
X I do not have any potential conflict of interest
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Acute DVT
• 1% of the adult population
develop an acute DVT during life
• Incidence 1.6/1000 per year
• 0.2/1000 non-lethal and
25.000 lethal pulmonary embolism
• Up to 50% develop an PTS
SOX Trial 2014, Lancet
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INTERVENTIONAL TREATMENT
Prevention of pulmonary embolism anddevelopment of a PTS
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Catheter-directed thrombolysisAdvantage:
• Large pulmonary embolus burden
• Below the knee involvement
• Achieves higher local concentrations
Drawbacks:
• Thrombolytic drugs – bleeding risk
• Treamtent duration – Coronary Care Unit
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• Multicentre, randomised clinical trial
• 209 patients with iliofemoral thrombosis
• First thrombosis
• Symptom duration < 21 days
• Primary endpoint: PTS after 24 months, patencyafter 6 months
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CaVent Trial
• Quality of life – no difference between thegroups
• Severe PTS – only 1 patient in the study
• Stent rate – only 15%
• Safety: 20 bleeding complications, 3 majorbleedings, no death or cerebral bleeding
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Case report
• 37-year old woman
• Chest Pain Unit
• Swelling, pain and paresthesia of the left lower limb for 1 day
• No suspected pulmonary embolism
• No relevant additional diseases
• Ultrasound: Massive thrombotic burden of the left commonand external iliac vein as well as common femoral vein.
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Patient lies prone
Common
femoral vein
Common
Iliac vein
External
Iliac veinMay-Thurner
Syndrom
Vena cava
Day 1 CDT Day 2
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May-Thurner Syndrom
Cross sectionfrontal section
ispub
compression
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Patient lies prone
Common
femoral vein
Common
Iliac vein
External
Iliac veinMay-Thurner
Syndrom
Vena cava
Day 1 CDT Day 2
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Indication for stent implantation
• No well defined criteria
• IVUS?
• Luminal narrowing of more than 50%
• Absent antegrade flow
• Presence of collateral flow
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Ultrasound-Assisted Versus Conventional Catheter-DirectedThrombolysis for Acute Iliofemoral Deep Vein Thrombosis
Kucher N, 2015
• Single centre, randomized, open label
• 48 patients with symptomatic iliofemoral thromboticocclusion
• Treatment with local lysis or catheter directedthrombolysis
• Stent rate >80%
• Primary patency >96% after 3 months
• Villalta Score 2,5 after 3 months
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Safety and Effectiveness of Stent Placement for IliofemoralVenous Outflow Obstruction
Meta-Analysis – 2869 patientsRazavi et al 2015
AT - indicates acute thrombotic-CDT+PTA+Stent; CPT - chronic post-thrombotic;NT - nonthrombotic
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Outcome
AT - indicates acute thrombotic; CPT - chronic post-thrombotic;NT - nonthrombotic
80% asymptomaticUlcer healing in 80%
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Additional studies
Study n drug dosage major patency Add.
bleeding proced.
The Copenhagen study 2010 103 rt-PA 1,2mg/h 1,5% 80%-5y 55%
The Maastricht study 2013 37 rt-PA 1mg/h 1 pat. 70%-1y 54%
The Bern study 2014 87 rt-PA 20mg/15h 1 pat. 87%-1y 83%
Park/So, 2015 56 urok. 30,000/h 0 pat. 78%-5y 100%42%-5y 0%
Bækgaard et al. Eur J vasc Endovasc Surg 2010
Strijkers et al., Venous and lymphatic disorders 2013
Engelberger et al., Thrombosis and haemostasis 2014
Park C, Vasc Specialist Int., 2015
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Conclusion
Dual session therapy: Catheter-directed thrombolysis to treat acute iliofemoral DVT:
• Local lysis alone
• is effective in resolving the massive thrombotic burden,
• leave the potential underlying reason behind, and
• increases bleeding risk with only modest results
• Combination of CDT plus PTA and Stent implantation resulted in a better patency and seem to reduce the risk for a PTS
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Venous -
Intervention
Center
Heidelberg
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Priv. Doz. Dr. Christian ErbelUniversity Hospital Heidelberg
Department of Cardiology, AngiologyHeidelberg, Germany
Venous -
Intervention
Center
Heidelberg
Dual session therapy: Catheter-directed thrombolysis to treat
acute iliofemoral DVT